堆石料的应力-应变特性及其三维破碎本构模型

姚仰平; 黄冠; 王乃东; 刘汉龙

doi:10.13204/j.gyjz201109003

堆石料的应力-应变特性及其三维破碎本构模型

doi: 10.13204/j.gyjz201109003

1.
1. 北京航空航天大学交通科学与工程学院,北京 100191;
2.
2. 中铁四院集团南宁勘察设计院有限公司,南宁 530003;
3.
3. 河海大学岩土工程研究所,南京 210098

基金项目:

国家自然科学基金项目(50879001,10872016);国家自然科学基金重点项目(90815024)

详细信息

作者简介:
姚仰平，男，1960年出生，博士，教授，博士生导师。E－mail:ypyao@buaa.edu.cn

中图分类号: TU502
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- 文章访问数: 80
- HTML全文浏览量: 8
- PDF下载量: 96
- 被引次数: 0
出版历程
- 收稿日期: 2010-06-06
- 刊出日期: 2011-09-20

STRESS-STRAIN CHARACTERISTIC AND THREE-DIMENSIONAL CONSTITUTIVE MODEL OF ROCKFILL CONSIDERING CRUSHING

1.
1. Department of Civil Engneering,Beihang University,Beijing 100191,China;
2.
2. Nanning Branch of China Railway Siyuan Survey and Design Group Co.Ltd,Nanning 530003,China;
3.
3. Geotechnical Research Institute,Hohai University,Nanjing 210098,China

摘要

摘要: 综合已有的研究成果，从压缩、剪胀和强度三方面分析颗粒破碎对堆石料应力-应变特性的影响。基于堆石料的变形和强度特性，引入新的硬化参数H，并推导出相应的屈服函数表达式，进而提出一个能够考虑堆石料颗粒破碎影响的弹-塑性本构模型。利用基于空间滑动面准则(SMP准则)的变换应力方法将模型进行三维化，并参照某堆石料大三轴试验结果对三维破碎本构模型的可行性进行验证。最后，利用三维破碎本构模型对不同应力状态下堆石料的应力-应变关系进行模拟。
- 堆石料 /
- 颗粒破碎 /
- 应力-应变特性 /
- 三维本构模型
Abstract: Integrating existing research results,such as compressed,dilatancy,and strength,the influence produced by particle breaking on stress-strain characteristic of rockfill was analyzed. Based on the deformation and strength characteristics of rockfill,a new hardening parameters H was introduced,and corresponding yield function was derived,then a elastic-plastic constitutive model was proposed which could consider the impact of rockfill particle breaking. Based on the transformation stress method on SMP criterion and referring to triaxial test results of rockfill,it was validated the feasibility of three-dimensional constitutive model considering crushing. Finally,the stress-strain relationship of rockfill was simulated by using three-dimensional constitutive model considering crushing for rockfill under different stress states.
- rockfill /
- particle breaking /
- stress-strain characteristic /
- three-dimensional constitutive model

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参考文献(16)

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